Aliexpress
Here are coupons that you can use.
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – THN NBD01 Warm Cup Mat 5V [EU] (-3 USD)
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. There is no active coupon in my database right now (for Banggood).
Link: Banggood product page
Price: -3 USD
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BGTHNB1, aff7off, BGxiaomiday4, BGAHOFF, BGHOMEAPP, BGTHNBF, bGhOnEy10, BGTT10, BGAFF7OFF, BGSS10%SW, BGHome15%, BGNBD01CP, BGHOMEA13, BG11SHOP, BGNBD01CZ
(these coupons are old, so probably won’t work)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – THN NBD01 Warm Cup Mat 5V [EU] (-3 USD)
Price history and price alert
Check out price history chart (for all/most countries) for THN NBD01 Warm Cup Mat 5V.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).